3d_export

$25

Chopper Biker 2

...includes all scene, lighting, cameras, materials and textures. many file formats are available. the visuals are in 4k resolution.

cg_studio

$119

Sikorsky HH-60 Jayhawk, Version 23d model

...jayhawk seahawk blackhawk helicopter aircraft coast guard army military chopper hh-60j hh60j uh-60 uh60 hawk search rescue .3ds .c4d...

3d_ocean

$8

Helipad 3D Landing Zone 2

...zone 2 3docean 3d air airplane airport area asphalt chopper clear fence fences flat h capital h text helicopter...

3d_ocean

$25

Helipad rounded high scaffolding

...(x1) - textures size: x1024 (x2), x2048 (4), x4096 (2 - materials...

3d_export

$11

3d chopper motorcycle motorbike frame chassis

...max all ver.: *3ds (multi format) 11. stereolithography: *.stl 12 autocad: *.dwg - each file was checked for opening...

3d_export

$13

harley davidson emblem logo badge symbol icon hdc club

...to include more contemporary vrsc (2002) and middle-weight street (215) ...

3d_export

$149

as-350 philadelphia police

...usa air support division n296pd chopper patrol aircraft emergency aviation<br>helicopter,eurocopter,ecureuil,as350,as-350,h12,h-125,a-star,astar,philadelphia,police,department,usa,air,support,division,n296pd,chopper,patrol,aircraft,emergency,aviation ...

3d_export

$149

as-350 us customs and border protection

...usa air support division n3938a chopper patrol aircraft emergency aviation<br>helicopter,eurocopter,ecureuil,as350,as-350,h12,h-125,a-star,astar,us,customs,and,border,protection,cbp,usa,air,support,division,n3938a,chopper,patrol,aircraft,emergency,aviation ...

3d_export

$149

as-350 ontario police

...usa air support division n10nt chopper patrol aircraft emergency aviation<br>helicopter,eurocopter,ecureuil,as350,as-350,h12,h-125,a-star,astar,ontario,police,department,usa,air,support,division,n10nt,chopper,patrol,aircraft,emergency,aviation ...

3d_export

$149

as-350 miami dade police

...air support division n806mp pbr chopper patrol aircraft emergency aviation<br>helicopter,eurocopter,ecureuil,as350,as,350,h12,h-125,a-star,astar,miami,dade,police,department,usa,air,support,division,n806mp,pbr,chopper,patrol,aircraft,emergency,aviation ...

3d_export

$149

as-350 san diego police

...air support division n708sd pbr chopper patrol aircraft emergency aviation<br>helicopter,eurocopter,ecureuil,as350,as-350,h12,h-125,a-star,astar,san,diego,police,department,usa,air,support,division,n708sd,pbr,chopper,patrol,aircraft,emergency,aviation ...

3d_export

$149

as-350 baltimore county police

...air support division n808cp pbr chopper patrol aircraft emergency aviation<br>helicopter,eurocopter,ecureuil,as350,as,350,h12,h-125,a-star,astar,baltimore,county,police,department,usa,air,support,division,n808cp,pbr,chopper,patrol,aircraft,emergency,aviation ...

3d_export

$149

as-350 tulsa police

...air support division n302tp pbr chopper patrol aircraft emergency aviation<br>helicopter,eurocopter,ecureuil,as350,as-350,h12,h-125,a-star,astar,tulsa,police,department,usa,air,support,division,n302tp,pbr,chopper,patrol,aircraft,emergency,aviation ...

3d_export

$249

as-350 philadelphia police animated

...support division n296pd animated animation chopper patrol aircraft emergency aviation<br>helicopter,eurocopter,ecureuil,as350,as-350,h12,h-125,a-star,astar,philadelphia,police,department,usa,air,support,division,n296pd,animated,animation,chopper,patrol,aircraft,emergency,aviation ...

3d_export

$249

as-350 ontario police animated

...support division n10nt animated animation chopper patrol aircraft emergency aviation<br>helicopter,eurocopter,ecureuil,as350,as-350,h12,h-125,a-star,astar,ontario,police,department,usa,air,support,division,n10nt,animated,animation,chopper,patrol,aircraft,emergency,aviation ...

3d_export

$249

as-350 us customs and border protection animated

...support division n3938a animated animation chopper patrol aircraft emergency aviation<br>helicopter,eurocopter,ecureuil,as350,as-350,h12,h-125,a-star,astar,us,customs,and,border,protection,cbp,usa,air,support,division,n3938a,animated,animation,chopper,patrol,aircraft,emergency,aviation ...

3d_export

$249

as-350 miami dade police animated

...division n806mp animated animation pbr chopper patrol aircraft emergency aviation<br>helicopter,eurocopter,ecureuil,as350,as,350,h12,h-125,a-star,astar,miami,dade,police,department,usa,air,support,division,n806mp,animated,animation,pbr,chopper,patrol,aircraft,emergency,aviation ...

3d_export

$249

as-350 san diego police animated

...division n708sd animated animation pbr chopper patrol aircraft emergency aviation<br>helicopter,eurocopter,ecureuil,as350,as,350,h12,h-125,a-star,astar,san,diego,police,department,usa,air,support,division,n708sd,animated,animation,pbr,chopper,patrol,aircraft,emergency,aviation ...

3d_export

$249

as-350 baltimore county police animated

...division n662pd animated animation pbr chopper patrol aircraft emergency aviation<br>helicopter,eurocopter,ecureuil,as350,as,350,h12,h-125,a-star,astar,baltimore,county,police,department,usa,air,support,division,n662pd,animated,animation,pbr,chopper,patrol,aircraft,emergency,aviation ...

3d_export

$249

as-350 tulsa police animated

...division n302tp animated animation pbr chopper patrol aircraft emergency aviation<br>helicopter,eurocopter,ecureuil,as350,as-350,h12,h-125,a-star,astar,tulsa,police,department,usa,air,support,division,n302tp,animated,animation,pbr,chopper,patrol,aircraft,emergency,aviation ...

3d_export

$149

as-350 lapd 2

...angeles police department usa air support division n661pd pbr chopper patrol aircraft emergency...

3d_export

$249

as-350 lapd 2 animated

...department usa air support division n661pd animated animation pbr chopper patrol aircraft emergency...

3d_export

$249

as-350 edmonton police service animated

...the file:<br>=========================<br>- light rig/hdri<br>tags:<br>helicopter eurocopter ecureuil as350 as-350 h125 h-12 a-star astar edmonton service canada canadian police department air...

3d_export

$149

as-350 anaheim police

...a-star astar anaheim police department usa air support division n32pd pbr chopper patrol aircraft emergency...

3d_export

$149

as-350 lapd

...lapd los angeles police department usa air support division n662d pbr chopper patrol aircraft emergency...

3d_export

$149

as-350 lapd 3

...a-star astar anaheim police department usa air support division n32pd chopper patrol aircraft emergency...

3d_export

$149

as-350 miami city police

...astar miami city police department usa air support division n72kc chopper patrol aircraft emergency...

3d_export

$149

as-350 oklahoma city police

...astar oklahoma city police department usa air support division n72kc chopper patrol aircraft emergency...

3d_export

$149

as-350 california highway patrol

...the file:<br>=========================<br>- light rig/hdri<br>tags:<br>helicopter eurocopter ecureuil as350 as-350 h125 h-12 a-star astar california highway patrol n974hp police department usa...

3d_export

$149

as-350 hillsborough county sheriff

...the file:<br>=========================<br>- light rig/hdri<br>tags:<br>helicopter eurocopter ecureuil as350 as-350 h125 h-12 a-star astar hillsborough county sheriff n160cc police department usa...

3d_export

$149

as-350 san jose police

...the file:<br>=========================<br>- light rig/hdri<br>tags:<br>helicopter eurocopter ecureuil as350 as-350 h125 h-12 a-star astar san jose police department usa air support...

3d_export

$149

as-350 royal canadian mounted police

...the file:<br>=========================<br>- light rig/hdri<br>tags:<br>helicopter eurocopter ecureuil as350 as-350 h125 h-12 a-star astar canada canadian royal mounted police department air...

3d_export

$149

as-350 edmonton police service

...the file:<br>=========================<br>- light rig/hdri<br>tags:<br>helicopter eurocopter ecureuil as350 as-350 h125 h-12 a-star astar edmonton service canada canadian police department air...

3d_export

$249

as-350 anaheim police animated

...a-star astar anaheim police department usa air support division n32pd animated animation pbr chopper patrol aircraft emergency...

3d_export

$249

as-350 lapd animated

...lapd los angeles police department usa air support division n662d animated animation pbr chopper patrol aircraft emergency...

3d_export

$249

as-350 lapd 3 animated

...lapd los angeles police department usa air support division n29la animated animation chopper patrol aircraft emergency...

3d_export

$249

as-350 oklahoma city police animated

...astar oklahoma city police department usa air support division n72kc animated animation chopper patrol aircraft emergency...

3d_export

$249

as-350 miami city police animated

...the file:<br>=========================<br>- light rig/hdri<br>tags:<br>helicopter eurocopter ecureuil as350 as-350 h125 h-12 a-star astar miami city police department usa air support...

3d_export

$249

as-350 california highway patrol animated

...the file:<br>=========================<br>- light rig/hdri<br>tags:<br>helicopter eurocopter ecureuil as350 as-350 h125 h-12 a-star astar california highway patrol n974hp police department usa...

3d_export

$249

as-350 hillsborough county sheriff animated

...the file:<br>=========================<br>- light rig/hdri<br>tags:<br>helicopter eurocopter ecureuil as350 as-350 h125 h-12 a-star astar hillsborough county sheriff n160cc police department usa...

3d_export

$249

as-350 san jose police animated

...the file:<br>=========================<br>- light rig/hdri<br>tags:<br>helicopter eurocopter ecureuil as350 as-350 h125 h-12 a-star astar san jose police department usa air support...

3d_export

$249

as-350 royal canadian mounted police animated

...the file:<br>=========================<br>- light rig/hdri<br>tags:<br>helicopter eurocopter ecureuil as350 as-350 h125 h-12 a-star astar royal canadian mounted police canada department air...

free3d

$15

custom chopper 2

...custom chopper 2 free3d simple and modest motorcycle.

thingiverse

free

Fully printable chopper by casaluce

...3d printable using a file from grabcad link : https://grabcad.com/library/chopper-2 ...

free3d

$79

Cartoon Chopper

...adv 2.10. scene totals objects: 170 shapes: 0 lights: 2 cameras: 2 helpers: 10 space warps: 0 total:...

thingiverse

free

Coupler MQ20 Braun Multiquick/minipimer chopper accessory / Acoplador accessori picadora by carlesoriol

...happens the same to you, just print it and drink some beer. no supports required. printed 0.1 with top/bottom pattern concentric.

sketchfab

$59

Biker on the chopper

...sport bike. 1686 fat guy + 5901 harley chopper. 2 cool driving and tricks animations. - biker on the...

thingiverse

free

Chopper / CH-33P Dome Gear Speaker Mount (MrBaddeley Mod) by jonhaag

...mod) by jonhaag thingiverse dual speaker mount (designed for 2quot; speakers) designed to attach to the "front" of the...

thingiverse

free

Ender-3 X-axis optical endstop v.2 by MSergW

...and similar the normal endstop is now used, the chopper flag is located on the wheel holder. nut m3...

thingiverse

free

Star Wars: Rebels - Full Size C1-10P Chopper - Main Arm by ProtoPROPS

...2.78" long 1 - 3/8" sch40 pvc pipe x 2 3/16" long i have included the stl files for...

thingiverse

free

Tony Tony Chopper Bobblehead (One Piece, Post-Timeskip) by ToastyShotgun

...since it's meant to be printed pretty large. update 122/20: added another torso without the spring holder and an...

thingiverse

free

Chopper Arm Support Rig

...will look gnarly. see my photos for an example. 2 put the rear support in from the inside of...

thingiverse

free

1'' optic/motor mount by docphoton

...optic/motor mount by docphoton thingiverse this secures (to a 1/2#39;' post) a 1'' optic, or a dc motor (for...

thingiverse

free

motorcycle speedo cable photo interrupter adapter

...turn without touching. inside is a "chopper" disc, with 2 slots, that fits snugly onto the cable end. the...

thingiverse

free

Warfleets: FTL Marauder Chopper Small Ships by darcoza

...resized to 32mm to work with warfleets: ftl base sizes.https://www.thingiverse.com/thing:228479/ ship 2 is adjusted from afterimagedans's bgf ork brute...

thingiverse

free

ECG SP 366 food chopper final gear spare part

...you will need 2mm triangle safety bit and philips #2 bit to replace this. remove two white plastic screw...

thingiverse

free

Warfleets: FTL Marauder Chopper Small Ships by darcoza

...34mm long and the base has been resized to 32m to work with warfleets: ftl base sizes.https://www.thingiverse.com/thing:4162920/ ship 2...

thingiverse

free

RC Chopper Clipon Transport Basket by Misdk

...print with 2 perimeters / shell thickness and infill 2 % distance between the chopper landing sticks, is 3.5...

thingiverse

free

Kawasaki KZ Headlight Mount

...font end, perfect for any boober/chopper build. accepts a 1/2quot; headlight mounting stud. use washers on all bolts when...

thingiverse

free

3.75" Scale Droid Socket, Starfighter or Ship by Kungaloosh

...(except r1) and (in version 2) bb-series droids. version 2 has top lids that line up closer to the...

thingiverse

free

Star Wars Legion laser cut MDF shield barrier by lowrizzle

...translucent filament. wee chopper and other greebles came from https://www.thingiverse.com/thing:207678 ...

thingiverse

free

Cheap stepper driver by glasshopper

...has a simple 2 transistor chopper and a pic 1208 as the step translator. economical buz 11 mosfets (50...

thingiverse

free

VPCOK FOOD CHPPER PACKING by CodeNameX

...大容量 1.2l 1~4人に適用 ミンチ きざむ おろす 離乳食 スムージー 氷 砕けるhttps://amzn.to/2skwlg ...

thingiverse

free

Turnigy Prop Cutter Remake/Re-design (shorter) by kerst

...one. it can now cut props down to around 2 ...

thingiverse

free

Star Wars: Rebels - Full Size C1-10P Chopper Frame by ProtoPROPS

...on astromech(dot)net update 08/06/2016 modified short supports #1 & #2 due to changes in the attached skins please understand,...

thingiverse

free

slotted wheel by jbeale

...my printer (ultimaker 2). remixed from "open-source chopper wheel" thing:2121 by...

thingiverse

free

Voltron Paladin Hand Weapon V2 by libs101

...one cell (1s) lipo battery from my toy quad chopper like this one; http://www.ebay.com/itm/traxxas-qr-1-battery-3-7v-360mah-25c-lipo-fpv-quadcopter-new-fast-free-s-u1b9-/132197132074?epid=1349711673&hash=item1ec790272a:g:iouaaoswx9fzhndd tip; the switch and led...

blendswap

free

70's Chopper Motorcycle

...that probably came from the 70's.latest change on 2013/02/19, 03:15:2fixed some...

thingiverse

free

Bomb Omb Valve Cap / Ventilkappe by Tombo_

...zu leicht abbricht wenn man es druckt. es sind 2 versionen für auto ventile und rennventile vorhanden. nicht zulässig...

thingiverse

free

VertiBird

...use the arduino 5v for the potentiometers. https://www.amazon.com/drok-adjustable-electronic-transformer-stabilizer/dp/b00sy37s00/ref=sr_1_2_sspa?keywords=5+volt+regulator&qid=1581009473&sr=8-2-spons&psc=1&spla=zw5jcnlwdgvkuxvhbglmawvypueynvbds0domddvouzgjmvuy3j5chrlzelkpuewmty1mduxmuzonjjos1yzvdrgwszlbmnyexb0zwrbzelkpuewmju5ntu3mtdhutvnrtqwu1mxssz3awrnzxroyw1lpxnwx2f0zizhy3rpb249y2xpy2tszwrpcmvjdczkb05vdexvz0nsawnrpxrydwu= chopper motor:https://usa.banggood.com/coreless-reducer-cw-motor-propeller-combo-set-for-rc-models-diy-p-998786.html?utm_design=41&utm_source=emarsys&utm_medium=neworder171109&utm_campaign=trigger-emarsys&utm_content=winna&sc_src=email_275773&sc_eh=ddedf71ef6b23ad31&sc_llid=19738787&sc_lid=105229698&sc_uid=mlck2km0nc&id=49510&cur_warehouse=usa i recommend using 18ga wire all the way to...

renderosity

$20

One Man Chopper

...ease of access.<br /> <br /> this vehicle is 2,080 polygons<br /> <br /> all content by dreamland models<br...

thingiverse

free

ESP8266 UP switch by hexxter

...solder some metal on the edge pins i use chopper wires for touch field): http://dirtypcbs.com/view.php?share=15460&accesskey=1b1a437a41eb1534f14b488f33c2cf78 http://de.aliexpress.com/item/5pcs-ttp224n-bsb-ttp224-ssop16/32432360351.html http://de.aliexpress.com/item/ws2812b-4pins-5050-smd-w-ws2811-individually-addressable-digital-rgb-led-chip-free-shipping/1594023008.html abstandsrahmen_touch_pcb.stl you...

thingiverse

free

POV Clock and Stand by KiwiGrinder

...you can solder the wires direct to the board) 12 power brick pcb included are the eagle files for...

thingiverse

free

Complete Monopoly One Piece Edition by RamonAngosto

...printing 10 copies fdm settings used: speed:80mm/s extruder t: 20ºc bed t: 40ºc infill: 10% material: pla if you...

thingiverse

free

JD2 bender die model by stmorgan

...pla casting. the two 20mm holes not found on chopper handbook print are for the pins which hold the...

cg_trader

$35

CHOPPER BIKE 2

...chopper bike 2 cg trader chopper motorcycle and man

grabcad

free

76 HD Ironhead Chopper-Phase 2

...r-phase 2 grabcad phase ii. 1976 harley ironhead chopper/bobber. all components except engine, carb, and chain. renderings only!

cg_trader

$15

Harley Davidson chopper bobber custom springer fork 2

...ger fork 2 cg trader harley davidson chopper bobber custom springer 3d model 2 , available in max, ready for 3d animation and ot

grabcad

free

Berg Duo Chopper

...approximate model of the berg duo chopper. tricycle for 2 ...

grabcad

free

Custom Chopper

...2 cylnder 4 stroke engine, created by autodesk inventor 209 ...

grabcad

free

rim 2

...rim 2 grabcad inventor 2012 chopper front...

grabcad

free

Speedometer-Motorcycle

...speedometer-motorcycle grabcad my choppers original speedometer 21 ...

grabcad

free

Food Blender Smart design 2

...food blender smart design 2 grabcad chopper concept design using...

cg_trader

$15

Harley Davidson chopper bobber custom springer fork 1

...trader harley davidson chopper bobber custom springer 3d asset 2 , formats include max, ready for 3d animation and...

cg_trader

$5

Harley-Davidson chopper bobber custom front wheel and tyre

...cg trader 3d asset harley-davidson chopper bobber custom front 2 bike bobber, formats max, ready for 3d animation and...

grabcad

free

Chopper bicycle

...and the gear. bike seat is taken from : https://grabcad.com/library/hubless-chopper-bike-2 pedals and the gear i took from :...

cg_trader

$10

Kitchen Knife 2

...3d, formats include obj, fbx, blend, mtl, blade chop chopper ready for 3d animation and...

grabcad

free

Janvy

...varde" the founder of vardenchi choppers. it took me 2 weeks to complete the entire assembly. i have not...

grabcad

free

american chopper model bike ( just for fun )

...chopper model bike ( just for fun ) grabcad 2 hour work....done in catia ......not a perfect work but...

cg_trader

$59

SH-3 Sea King 2 3D

...united states navy westland amphibious cold war heli helicopter chopper vray max 3ds .stl stl 3d printer metaverse sh...

grabcad

free

Chopper's Pipe Chassis

...model is designed in solidworks and i worked only 2 hours. this is very simple model and i designing...

cg_trader

$99

3DRT - Motorbikes Collection

...optimized for real-time engines and suitable for high-quality renders. 2 bikes meshes: chopper (harley davidson concept) sport bike (honda...

grabcad

free

Luffy 3d Model

...luffy from one piece, mugiwara no luffy. see also: https://grabcad.com/library/tony-tony-chopper-2 based in picture found in: https://www.renderhub.com/sinh-nguyen/luffy-one-piece-fan-art made on...

cg_trader

$6

Predator Salamander mask - Chopper | 3D

...intended for printing on a 3d printer. lot include 2 versions of mask lot include full and splited versions...

grabcad

free

Luffy one piece - Sérgio CAD CAM

...luffy from one piece, mugiwara no luffy. see also: https://grabcad.com/library/tony-tony-chopper-2 by sergio cad cam. based in picture found in:...

grabcad

free

Harley Davidson / Buell Fatster Chopper

...come in sw2020 version, svpj fles come in visualize 220 ...

cg_trader

$39

Chinook CH-47 Helicopter 2

...chinook helicopter heavy lift ch47 ch 47 army military chopper usa cargo us usairforce aircraft c17 c 17 united...

cg_trader

$15

meteor 350 fender | 3D

...royal enfeld meteor 350 model with a visor has 2 slots for fog lights a good visor and its...

cg_trader

free

Knife

...i've made) based onchopper style with hidden tang & 2 pin construction. blade length 14" from tip to handle...

grabcad

free

CHOPPERS ALL IN WHEEL

...130-60-23 - back tire: lexani lx thirty 295-30-zr26 - 2 fuel...

cg_trader

$35

HONDA XRE 300 2016

...iteration). worked body elements, wheels. bike moto motorbike sports chopper wheel disk urban tire harley davidson vehicle...

cg_trader

$35

Kawasaki Z900RS Cafe 2020

...iteration). worked body elements, wheels. motorbike moto bike kawasaki chopper wheel disk racing sport tire harley davidson motogp vehicle...

cg_trader

$80

Bike hurly hurly 650 Ti game ready

...ready cg trader i worked on this bike for 2 weeks, as for me it turned out great. motorcycle...

cg_trader

$35

Trike Custom Motorcycle

...great bike builder. low poly preserved in the .blends 2 versions included, 1 with (projected decals) and 1 without...

cg_trader

$13

City bike

...than 1 billion were in existence at a given time.[1][2[3] these numbers far exceed the number of cars, both...

cg_trader

$39

Black Helicopter Cockpit

...max included: vray and standard materials. diffuse texture is 248 x 2048 pixel resolution. previews rendered with vray. hdri...

cg_trader

$35

Indian FTR 1200 S 2019

...iteration). worked body elements, wheels. motorbike moto bike sports chopper wheel disk urban engine harley davidson tire vehicle...

cg_trader

$7

American Force CHOPPER SS | 3D

...me on instagram: https://www.instagram.com/omg_onemangarage diecast slotcar tamiya kyosho 118 12 143 164 miniatures...

cg_trader

$349

Turboshaft Helicopter Engine

...v-ray - softimage - lightwave - 3ds turbomeca arriel 2 arriel 2 turboshaft engine helicopter westland agusta sikorsky hawk...

cg_trader

$29

Aircraft External Fuel Tank

...no 3rd party plugins required. software used: 3ds max 221 for modeling uv layout for unwrapping photoshop and substance...

cg_trader

$399

Turbomeca Arriel 2 Turboshaft Helicopter Engine

...turboshaft engine french sikorsky agusta helicopter aircraft aerial heli chopper turbofan compressor turbine fan blade jet air part aircraft...

cg_trader

$99

White Eurocopter EC155 3D Helicopter

...to edit or add any details. file is ( 8192 x 8192 ) pixels. materials might need to be...

cg_trader

$2

Drone

...poly ___ low poly model 1: face: 407 model 2 face: 679 model 3: face: 677 vertex: 450 vertex:...

cg_trader

$99

Robinson R22 White Static

...for rendering light rig/hdri tags: robinson 22 r22 helicopter chopper copter air craft craft civil private jet blue small...

cg_trader

$129

Viper Military Helicopter

...both diffuse and bump) 7168 x 7168 px. dashboard 248 x 2048 px. materials might need to be re-assigned...

cg_trader

$40

Mil mi 8 low poly animated

...only internals, wheels and blades over lapping. comes with 2 sets of blades, detailed and blured (for flight). animated...

cg_trader

$20

Double Coptor for Unity

...rotate wing set 1 set 2 set 3 polys: 2900 original model created by moscowich80. uploaded for sale here...

cg_trader

$12

MTB Frame bike R

...a bicycle and sometimes includes the headset and seat post.[2 frame builders will often produce the frame and fork...

cg_trader

$99

Robinson R22 Blue Static

...for rendering light rig/hdri tags: robinson 22 r22 helicopter chopper copter air craft craft civil private jet blue small...

cg_trader

$10

Mil Mi 24

...helicopter vehicle aircraft bell rescue copter rescue rescue copter chopper rescue copter chopper rotor westland helo airplane drone quadcopter...